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AutoCodes – Chevrolet – P0650 Chevrolet

P0650 Chevrolet Code - Malfunction Indicator Lamp Control Circuit

Quick Answer

The Malfunction Indicator Lamp (MIL) illuminates to inform the driver that an emission system fault has occurred, and the powertrain control system requires service. Common causes include Faulty Malfunction Indicator Lamp Bulb, Malfunction Indicator Lamp Bulb harness is open or shorted, Malfunction Indicator Lamp Bulb circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0650 Chevrolet indicates Malfunction Indicator Lamp Control Circuit.
Common causes
Common causes include Faulty Malfunction Indicator Lamp Bulb, Malfunction Indicator Lamp Bulb harness is open or shorted, Malfunction Indicator Lamp Bulb circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 53,669
How popular is this code, among other codes? Medium
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Table of contents Created and updated by William Orellana on Jul 18, 2022
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Code P0650 Chevrolet Description

The Malfunction Indicator Lamp (MIL) illuminates to inform the driver that an emission system fault has occurred, and the powertrain control system requires service. Ignition voltage is supplied directly to the MIL. The Engine Control Module (ECM) turns the MIL ON by grounding the MIL control circuit when the emission system fault occurs. Under normal operating conditions, the MIL should be ON only when the ignition is ON, and the engine is OFF. The Diagnostic Trouble Code (DTC) will be set when the ECM detects low voltage during the MIL control circuit driver OFF state. This indicates either a shorted to ground or an open MIL control circuit.
OBDII Code P0650 Chevrolet - Malfunction Indicator Lamp Control Circuit - AutoCodes.com
P0650 Chevrolet Code - Malfunction Indicator Lamp Control Circuit
What does this mean?

What are the Possible Causes of the DTC P0650 Chevrolet?

  • Faulty Malfunction Indicator Lamp Bulb
  • Malfunction Indicator Lamp Bulb harness is open or shorted
  • Malfunction Indicator Lamp Bulb circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0650 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

If the condition is intermittent, move the related harnesses and connectors while monitoring the scan tool MIL control circuit status parameters. Perform this test with the ignition ON and the engine OFF, and with the engine running. The MIL control circuit status parameters change from OK or Not Run to Malfunction if there is a condition with a circuit or a connection.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0650 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0650 Chevrolet code?

Need more information on how to fix the P0650 Chevrolet code? Get Access to Factory Service Manuals

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Get the P0650 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0650 Chevrolet Code

1. What does OBDII code P0650 on a Chevrolet indicate?

The P0650 code indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit.

2. What are common symptoms of a P0650 code in a Chevrolet vehicle?

Common symptoms include the Check Engine Light staying on constantly or intermittent illumination.

3. What are possible causes of a P0650 code in a Chevrolet?

Possible causes include a faulty Malfunction Indicator Lamp (MIL), damaged wiring in the control circuit, or a defective Engine Control Module (ECM).

4. How can I diagnose a P0650 code in my Chevrolet?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the MIL circuit for any visible damage, and testing the components involved in the circuit.

5. Can I still drive my Chevrolet with a P0650 code?

It is generally safe to drive your vehicle with a P0650 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential long-term problems.

6. How can I repair a P0650 code in my Chevrolet?

Repairing a P0650 code may involve replacing the Malfunction Indicator Lamp, repairing damaged wiring, or reprogramming the ECM.

7. Is it possible to reset a P0650 code in a Chevrolet without fixing the issue?

While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as the code will likely reappear.

8. Can a DIY enthusiast fix a P0650 code in a Chevrolet?

Depending on your experience and tools, you may be able to diagnose and repair a P0650 code yourself, but complex electrical issues may require professional assistance.

9. How much does it cost to repair a P0650 code in a Chevrolet?

The cost of repairing a P0650 code can vary depending on the underlying issue, the parts needed, and whether you choose to do the repairs yourself or take your vehicle to a mechanic.

10. How long does it take to repair a P0650 code in a Chevrolet?

The repair time for a P0650 code can vary based on the specific issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem.

Discuss the causes and fixes for P0650 Chevrolet OBDII Code

Submit a New Comment

  • My truck went into lockdown when I changed my keys which in the column I couldn’t start my truck had to take it to the Chevy garage for them to reprogram my truck do you think maybe the shop guy just didn’t turn it on because he reset a lot of things he said wasn’t working to let me know

    Reply to Comment

    • The P0650 code typically indicates an issue with the malfunction indicator lamp (MIL) control circuit, which might suggest that the MIL is either malfunctioning or has lost connection. This code doesn’t usually trigger a "lockdown" or immobilize the vehicle, but it can be associated with various system resets or reprogramming, especially after a key replacement.

      Given that your truck was taken to the Chevy shop for key reprogramming, it’s possible that the technician needed to reset or reprogram several modules to ensure everything communicates properly with the new keys. During this process, the P0650 code could have been triggered if certain systems weren’t powered on correctly or had communication errors. Sometimes, after reprogramming, technicians may need to recheck and turn on any previously reset components to clear out any lingering error codes.

      If the code persists after reprogramming, here are a few things to check:

      1. Inspect the MIL Wiring: Ensure there are no loose or damaged wires in the MIL control circuit.
      2. Re-run Diagnostic Scan: Sometimes, codes can linger temporarily after reprogramming, so re-running a scan can verify if it’s still active.
      3. Battery and Connections: Check the battery and all relevant connections, as voltage drops or weak connections can trigger similar codes.

      Let me know if you’re experiencing any other specific issues; I can help troubleshoot further!

      Reply to Comment
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